A quick iOS vs. Android tablet stance for work purposes from my very personal point of view
For work, I use the
Noteshelf app exclusively to take notes at work, because I need to copy images into my notes, and keep separate shelves and notepads. I also need the ability to highlight, type, change font colors, save separate pages or whole notepads as PDFs and images, or to the cloud. I also need for the write field to be large, so that I can have smaller text on the page.
I own all handwriting apps there are in the App store for the iPad, but, sadly, there aren't yet any really good ones for my Nexus 7, or else I would use it much more often. I'd love to have Noteshelf on my Nexus and be able to keep them both in synch.
I do that because I hate using paper, and it is so much easier for me to find old notes than going through a drawer of paper. Also, no paper cuts!
Also, now, I can log into my work virtual desktop from my tablets, so I can leave my laptop behind when I go into meetings. Since then Nexus 7 does not have 3 or 4 G, it is again my iPad that I pick for that.
We started using Prezi at work, and their iPad app is getting better and better. That one, again, is iOS only. There are other apps I use when needed, like when I need to create wireframes on the fly, but Noteshelf and Prezi are my most often used tools for work.
I like Android a lot, and find it a much mote liekable company than Apple, but in many cases, e.g. the handwriting ones, it is obvious that iOS apps are more polished and more numerous. Depending on what it is you do on your tablet, you may find this to be true or the reverse.